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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:41 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:41 -0800 |
commit | 648161bb0edfc3d43db63caed5cc5213bc6cb78f (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /JavaScriptCore/wtf/PassRefPtr.h | |
parent | a65af38181ac7d34544586bdb5cd004de93897ad (diff) | |
download | external_webkit-648161bb0edfc3d43db63caed5cc5213bc6cb78f.zip external_webkit-648161bb0edfc3d43db63caed5cc5213bc6cb78f.tar.gz external_webkit-648161bb0edfc3d43db63caed5cc5213bc6cb78f.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'JavaScriptCore/wtf/PassRefPtr.h')
-rw-r--r-- | JavaScriptCore/wtf/PassRefPtr.h | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/JavaScriptCore/wtf/PassRefPtr.h b/JavaScriptCore/wtf/PassRefPtr.h deleted file mode 100644 index ca8f2cb..0000000 --- a/JavaScriptCore/wtf/PassRefPtr.h +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public License - * along with this library; see the file COPYING.LIB. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - */ - -#ifndef WTF_PassRefPtr_h -#define WTF_PassRefPtr_h - -#include "AlwaysInline.h" - -namespace WTF { - - template<typename T> class RefPtr; - template<typename T> class PassRefPtr; - template <typename T> PassRefPtr<T> adoptRef(T*); - - template<typename T> class PassRefPtr { - public: - PassRefPtr() : m_ptr(0) {} - PassRefPtr(T* ptr) : m_ptr(ptr) { if (ptr) ptr->ref(); } - // It somewhat breaks the type system to allow transfer of ownership out of - // a const PassRefPtr. However, it makes it much easier to work with PassRefPtr - // temporaries, and we don't really have a need to use real const PassRefPtrs - // anyway. - PassRefPtr(const PassRefPtr& o) : m_ptr(o.releaseRef()) {} - template <typename U> PassRefPtr(const PassRefPtr<U>& o) : m_ptr(o.releaseRef()) { } - - ALWAYS_INLINE ~PassRefPtr() { if (T* ptr = m_ptr) ptr->deref(); } - - template <class U> - PassRefPtr(const RefPtr<U>& o) : m_ptr(o.get()) { if (T* ptr = m_ptr) ptr->ref(); } - - T* get() const { return m_ptr; } - - void clear() { if (T* ptr = m_ptr) ptr->deref(); m_ptr = 0; } - T* releaseRef() const { T* tmp = m_ptr; m_ptr = 0; return tmp; } - - T& operator*() const { return *m_ptr; } - T* operator->() const { return m_ptr; } - - bool operator!() const { return !m_ptr; } - - // This conversion operator allows implicit conversion to bool but not to other integer types. - typedef T* PassRefPtr::*UnspecifiedBoolType; - operator UnspecifiedBoolType() const { return m_ptr ? &PassRefPtr::m_ptr : 0; } - - PassRefPtr& operator=(T*); - PassRefPtr& operator=(const PassRefPtr&); - template <typename U> PassRefPtr& operator=(const PassRefPtr<U>&); - template <typename U> PassRefPtr& operator=(const RefPtr<U>&); - - friend PassRefPtr adoptRef<T>(T*); - private: - // adopting constructor - PassRefPtr(T* ptr, bool) : m_ptr(ptr) {} - mutable T* m_ptr; - }; - - template <typename T> template <typename U> inline PassRefPtr<T>& PassRefPtr<T>::operator=(const RefPtr<U>& o) - { - T* optr = o.get(); - if (optr) - optr->ref(); - T* ptr = m_ptr; - m_ptr = optr; - if (ptr) - ptr->deref(); - return *this; - } - - template <typename T> inline PassRefPtr<T>& PassRefPtr<T>::operator=(T* optr) - { - if (optr) - optr->ref(); - T* ptr = m_ptr; - m_ptr = optr; - if (ptr) - ptr->deref(); - return *this; - } - - template <typename T> inline PassRefPtr<T>& PassRefPtr<T>::operator=(const PassRefPtr<T>& ref) - { - T* ptr = m_ptr; - m_ptr = ref.releaseRef(); - if (ptr) - ptr->deref(); - return *this; - } - - template <typename T> template <typename U> inline PassRefPtr<T>& PassRefPtr<T>::operator=(const PassRefPtr<U>& ref) - { - T* ptr = m_ptr; - m_ptr = ref.releaseRef(); - if (ptr) - ptr->deref(); - return *this; - } - - template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, const PassRefPtr<U>& b) - { - return a.get() == b.get(); - } - - template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, const RefPtr<U>& b) - { - return a.get() == b.get(); - } - - template <typename T, typename U> inline bool operator==(const RefPtr<T>& a, const PassRefPtr<U>& b) - { - return a.get() == b.get(); - } - - template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, U* b) - { - return a.get() == b; - } - - template <typename T, typename U> inline bool operator==(T* a, const PassRefPtr<U>& b) - { - return a == b.get(); - } - - template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, const PassRefPtr<U>& b) - { - return a.get() != b.get(); - } - - template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, const RefPtr<U>& b) - { - return a.get() != b.get(); - } - - template <typename T, typename U> inline bool operator!=(const RefPtr<T>& a, const PassRefPtr<U>& b) - { - return a.get() != b.get(); - } - - template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, U* b) - { - return a.get() != b; - } - - template <typename T, typename U> inline bool operator!=(T* a, const PassRefPtr<U>& b) - { - return a != b.get(); - } - - template <typename T> inline PassRefPtr<T> adoptRef(T* p) - { - return PassRefPtr<T>(p, true); - } - - template <typename T, typename U> inline PassRefPtr<T> static_pointer_cast(const PassRefPtr<U>& p) - { - return adoptRef(static_cast<T*>(p.releaseRef())); - } - - template <typename T, typename U> inline PassRefPtr<T> const_pointer_cast(const PassRefPtr<U>& p) - { - return adoptRef(const_cast<T*>(p.releaseRef())); - } - - template <typename T> inline T* getPtr(const PassRefPtr<T>& p) - { - return p.get(); - } - -} // namespace WTF - -using WTF::PassRefPtr; -using WTF::adoptRef; -using WTF::static_pointer_cast; -using WTF::const_pointer_cast; - -#endif // WTF_PassRefPtr_h |